The Players of Null-A

Gilbert Gosseyn must track down and destroy the galaxy-threatening entity known as The Follower, and also stop a malevolent dictator bent on annihilating all life in the solar system.

Long Synopsis:

[from the back cover]
Null-A Revisited
Shadow of The Follower
What strange being was The Follower? That question plagued Gilbert Gosseyn all during his efforts to track down this galaxy-threatening entity. Wherever Gosseyn went, the shadow of The Follower fell across the trail. Even Gosseyn's NULL-A trained double brain could not cut through that darkness....